Serpent Safe–I’m mean, come on, …SNAKE BALL GO! (2d12 Snakes when thrown and broken)
Lost Shard-Belongs a bigger piece of gemstone that was possessed by the kingdom of Agzorn Used long ago to awaken the magic of this realm.

Make a dexterity roll to throw it into place. When thrown it begins to hum at the targets feet. Then in 1D4 rounds it begins to grow and a giant hermit crab emerges. It is completely feral and will attack the thing its closest to. It will then not let go and do 1D4 per round until it is killed. It will also make the target slow depending on it’s strength. Who would think that a tiny little shell could be the creature that ruined their days?

To add on to what Fictifs said, I think it would be cool if it were extremely fragile and only the most advanced blacksmiths in the universe could manage to bind it to an object and cast a spell on it to give it strength in battle.